Differential.



B. A. ADLER, DIFFERENTIAL.

APPLICATION FILED DEC.26. l9l4. 1,252,641 y Patented Jan. S, 1918.-

2 SHEETS*SHEET l.

as expensivemachinework, is cheap to-manu- UNITED ystrait ES PATENTOFFICE.

B203 @431.133, 'or-CHICAGQfILLINoIsgnssIGNoR'To rareza. LORENZ, orCHICAGO,

, ILLINOIS.

' :surment-mn To all 'whom it may concern:

,A which is nsed to communicate 10 Be `itlmown that I, Brion A. Annen, asubi ject of the King of Sweden, residing at the# straight line. Thedisadvantages of the ordinar geared differential are manifold, but -theAundinnentalv and radical one yresults Afi'on'i'the 4fact that Ithe powerisA not. 'positivelyV applied to either ir-heel, bnt that the powerwhich earch wheel receives is dependenton the traction Vof the otherwheel on tlie"road\vay; that is, that. no more power will be transmittedthan cor-respondsto the -.resistanee of that wheel which has the least`adhesii-'e friction on the roadway. My in'- ventina provides means bywhich the power .of the engine is transmitted directly Aand posotherwheel.

.. Figi?- referci'ice to.. the, d ra wiin itively to each wheel.independently of the The ower applied to each wheeltless frictionosses) is the full power of the engine limited. only by its frictional.contact with the roadway, and less the iower actually absorbed byutheother wheel.

he mechanism is 4free froin gears vand .p inions, eliminati-ing thenoise and. frictionV thereof.l v.lt is simp1e,;and being free lvtroni4The 'pri ciplcs, of my', inventiony arelillnstratcd in the drawings,inavhich--f Figure-1 shows a' long itndmal section Fig ments.;

. Fig. 'ldisajsection of dotted] lined-724,., i

Further, describing iny invent Speeeation ot Letters Yatent.

city` of Chieago, iii the county,r of Cook and l :State of Illinois,hare invented certain new.

FigLQ isasection' of Fig-.1 ori-the line4 4 U i. persi 3 isa member hy,which conneetioiiisv ,eterni of,v the, intermediateelement,

Patented Jan. 8,- V1918.

Applicationled December 26, 1914. Serial No.,818,0 07,

titled nale of the full tloatin' ty e supporte'd n allnement with eachother lgybearngs and a casing (not shown) in the. usual andvi-e'll-hnow-n manner. Ik support2 which mayr he in the form of u shellor casing, consisting of the parts 2 and 3, secured together .at

. his journaled at. Qfand 3,"a`n'the` two seetioiis 4of the shaft. Anannular be\'cled""ear 5,-iiiay be attached to the fiange G ofthe Schell2, 3 by bolts 7, or othermeans.. Within the said shell orsnpport'issecnred a driving elenient S, which is in aiinnlarform..ha-ving the inwardly projecting flange 9. The said flange isinterrupted to forni two series of alternately gilaccd notches'lO and1l. On each side o -thc said driving element is a driven element,consisting of an annular` disk 1&2, having an inwardly projecting flange13, which is rovided on itsinner -face with a multiplicity ofsymmetrical notches 1st, thereby foriningan annular rack. The sai-ddriven .elements are rigidly secured to thei ends of the 'shaft scctionsagainst rotation thereon, and for'this purpose 'thel ends 'of -the shaftsections are squared and adapted to be inserted within corresponding-lysquared openings in the inwardlyy extended sleeves 16. The said .sleevesare inaeh'incd on their outer surfaces to forni bearings 1T, for theintermediate or transmission lements' 1S, which are iiiterposed betweenthe driving and driven cleinents hereinbcfore described. The said in.-ternied'ate or .transmission elements by which the power iscommunicated from S to L6 haveV inwardly projecting sleeves 19refcra'bly notchedon their -innecand' facingr,y ends as shown yat 19' to`insure axial .alinenient and are further 4provided with bushings 19",.'.lilonnted on the saidl inter- 'mediate elements are .the members shown'inv icctive in- Fig, I3-.1 'Said members` may consistofa double endeddogQQ, having the engaging yprojections 21 and 22. Said dog -isnionnlcdbirone cnd of a 4.short shaft 23,

while oirtheolher end-thereof is;a1era n k 24, haring a avrist pinott-schat `i-ighbl angles tothe doggQOii,..Onea'oiginore of the said,com signin lf'igfarolto mounted Vupon the ntfeiji'nediate cloni-ent.,-As ylcni'cnt a .-s1'ng.c ..liavingthree ),gdegrces from anni n-sctfat.angles. of 1;

ros

cach fathcifosaltliougli the -iiinnher.iotllarnis i and'connectingomnibus,...as well .asa-the may b0- varied as desired. Whenmounted on the said intermediate member, so that shaft 23 will turnfreely thereon, the projections 2O and 22 are adapted alternatively toengage within the notches 14. The wrist pins 25, projecting inwardly arereceived Within the notches 10 of the driving element. lVhen constructedas shown with three of such members on the intermediate elements, thedriven member should be provided-with six of said notches spaced 60degrees from each other, whereby the wrist pins projecting thereintowill alternate from either side about its circumference.

lVhen power is applied through the gear 5, the shell 2, 3, and thedriving element 8, turning them to the right as indicated in Figs. 4 and5, the engagement of wrist pins 25 in notches 10 will turn said wristins and the connecting dogs to the positions shown in Figs. 4 and 5,thereby causing said dogs to engage in the circular racks, and transmitthe power to the axles, upon which .the driveninembers are irrevolublysecured. It will be seen that the power thus applied is applied to eachwheel through the medium vof the aXle sections independently of theother wheel. Then the vehicle is turned 'from a direct line the powerwill remain positively communicated to the .slow mowing wheel; that is,the one following the curve of sliortest'radius, while the difference inthe speed of the two wheels is provided for by a disengagement of theratchet connections with the outside or faster moving wheel. This willcontinue until the vehicle resumes its movement in a straight line, whenthe engagement will be restored and the power vapplied to both wheelsequally. When the direction of the power is reversed the engagement `ofthe wrist pins within the notches of the driving element will cause theother' end of the dog to be engaged within the rack in the op ositedirection, the operation .as the vehic e runs baekwardly being the saineas before described.

The sleeves V19 of the transmission elements are provided with bosses orprojections 30, regularly spaced about their pel riphery and extendedparallel to the longitudinal axis. Said bosses should correspond 'innumber to the notches 11 in the driving element, and should be of suchsize that they will be received loosely therein, to make a non-rigidconnection. The relation in size and spacing of said bosses and notchesto eachother should be such that when the wrist pins 25 are engagedwithin .the notches 10, and the dogs 20 are in operative relation to therack' on the driven element, the bosses 30 will be engaged within'notches- 11, thereby relieving" the strain on the wrist pins and theconnectingmemhers.

In order that the transmission elements and the various parte. thereofmay be held insana vand 32. One of said:7 openings, however, is

broadened as at 33. A pin of spring steel v has the shank 34 firmlyseated in one of the openings 31. A ortion thereof 3l extends within thecham er 33, .while a further extension 35, is formed into a leaf spring36, terminating in the rounded end 37. I arefer to place the round andoval' openings in the osses alternately, so that the pins willbealternately seated and the spring portions thereof be alternatelyprojected and operative about the peripheries of the two sleeves. Aslight variation of the transmission elements with reference to eachother is thus provided. Such variation is limited by the engagement ofpart 34 of pin 34 within the chamber 33, while the action of the springportion 36 tends at all times to hold the parts in normal relation.

Having thus fully described my invention what I claim as new and desireto secure by Letters Patent is- 1. In a differential: the combinationwith a two piece shaft, and driven elements irrevolubly secured on theproximate ends thereof, of la driving element between the drivenelements, intermediate elements between the driving element'and thedriven elements, and shafts on the intermediate elements each having adouble ended dog on one end engageable with the driven element adjacentthereto and also provided with a crank having .a wrist in on the otherend engageable with the riving element.

2. In a differential: the combination with a two 'piece shaft, of drivenelements irrevolubly secured on the proximate ends thereof, a drivingelement provided-with elements one on each side of said driving elementhaving stub' shafts mountedl thereon,

.double ended dogs on one end of each of said stub shafts to engage thesaid rack, and

lcranks on Athe other end ofthe stub shafts to engage the .notchesinseid driving element. A

thereof, a support revoluble on the shafta driving element on thesupport provided p Withnotches, transmission elements between the drivenelements and the driving ele-l ment', and double ended dogs mounted onstub shafts journaled 1n the transmission elements and provided withcranks having.

wrist pins to engage within the notches on the driving element `wherebythe ends of said 'dogs will alternatively engage the driven elements.

5. In a differential; the combination with a two piece shaft, of drivenelements irrevolubly secured on the proximate ends thereof, .a drivingelement provided with two series of notches, transmission elementsrevolubly mounted on the shaft and provided With sleeves having bossesthereon engageable 'with one series of notches of. the driving element,and devices mounted on the transmission element provided with meansengageable, with the other series' of notches on 'said driving elementwhereby said device will engage with' and aetuate the driven element.

G. In a differential; the combination with ay two piece shaft, of drivenelements irrevolubly secured on the proximate ends thereof, a drivingelement, a plurality of transmission elements provided with axiallyalined openings between said driving element 'and driven elements, andelastic'means in 'said openings for keeping said transmission, elementsin yielding relation to eac other. i

7. In a differential; a revoluble casing, a. two-piece shaft axiallyjournaled therein, anv annular inwardly projecting driving member in thecasing, driven members on* each side of thedriving member irrevolublymounted on the ends of the shaft and pro vided with annular racks,intermediate elements on each side of the driving member, stuo shaftsjournaled in the intermediate elements, Vcranks on the inner ends of thestub shafts to engage the driving member, and double ended dogs on the,other ends of the stub shafts to engage the said annular racks.

In witness whereof, I have hereunto subscribed my name, this nineteenthday of December, `1914, in the presence of two subscribing Witnesses.

.BROR A. ADLER.

Vitnesses:

C. K. CHAMBERLAIN, A. S. PHILLlrs.

